Diouane Youssra, Seijas-Da Silva Alvaro, Oestreicher Víctor, Abellán Gonzalo
Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, Catedrático José Beltrán Martínez, 2, 46980 Paterna, Valencia, Spain.
Dalton Trans. 2025 Apr 15;54(16):6538-6549. doi: 10.1039/d5dt00273g.
While halide substitution has significantly influenced the electrical and magnetic properties of α-layered hydroxide frameworks (α-LH), the incorporation of pseudohalides remains limited. In this study, we present a detailed investigation of two-dimensional cobalt-layered hydroxides modified with tricyanomethanide (CN) and thiocyanate (SCN) pseudohalides, synthesized a simple epoxide route at room temperature. Pseudohalide incorporation induces subtle structural modifications relative to pristine cobalt-chloride layered hydroxide (α-Co-Cl), including changes in interlayer spacing and the confirmation of a distinct bridging coordination in thiocyanate-modified samples. Magnetic measurements reveal broadly similar behavior across all samples, with the thiocyanate compound reflecting a structural difference that affects its magnetic response. These findings underscore the influence of pseudohalides on the structure and the effect of pseudohalide substitution on the magnetic response of α-cobalt-based layered hydroxides, demonstrating the chemical and structural versatility of -like hydroxides as tunable materials for designing novel hybrids with dynamic structures.
虽然卤化物取代对α层状氢氧化物骨架（α-LH）的电学和磁学性质有显著影响，但拟卤化物的掺入仍然有限。在本研究中，我们详细研究了用三氰基甲烷化物（CN）和硫氰酸盐（SCN）拟卤化物修饰的二维钴层状氢氧化物，它们是在室温下通过简单的环氧化合物路线合成的。相对于原始的氯化钴层状氢氧化物（α-Co-Cl），拟卤化物的掺入引起了细微的结构修饰，包括层间距的变化以及硫氰酸盐修饰样品中独特桥连配位的确认。磁性测量表明，所有样品的行为大致相似，硫氰酸盐化合物反映出影响其磁响应的结构差异。这些发现强调了拟卤化物对结构的影响以及拟卤化物取代对α-钴基层状氢氧化物磁响应的影响，证明了类氢氧化物作为具有动态结构的新型杂化材料的可调谐材料在化学和结构上的多功能性。
